公开(公告)号：US20190058015A1

公开(公告)日：2019-02-21

申请号：US16166782

申请日：2018-10-22

Applicant: LG DISPLAY CO., LTD.

Inventor： Sang-Bin LEE ,  Hye-Min HWANG ,  Hui-Kun YUN ,  Jun-Ho YOUN ,  Jun-Young KIM

IPC: H01L27/32 ,  H01L51/00 ,  H01L51/52 ,  G09G3/32 ,  H01L51/50

CPC classification number: H01L27/3206 ,  G09G3/32 ,  G09G2300/0842 ,  H01L27/3211 ,  H01L27/3246 ,  H01L27/3258 ,  H01L51/0004 ,  H01L51/5012 ,  H01L51/5225 ,  H01L51/5265 ,  H01L2227/323 ,  H01L2251/558

Abstract: An electroluminescent display device includes a substrate on which first and second pixel regions are defined, a passivation layer over the substrate, a first electrode in each of the first and second pixel regions on the passivation layer, a bank layer exposing the first electrode, a light emitting layer on the first electrode exposed by the bank layer, and a second electrode on the light emitting layer, further the bank layer includes first and second openings exposing the first electrodes corresponding to the first and second pixel regions, respectively, and also a depth of the second opening is larger than a depth of the first opening, and a height of the bank layer of the second pixel region is larger than a height of the bank layer of the first pixel region.

公开(公告)号：US20180033836A1

公开(公告)日：2018-02-01

申请号：US15635888

申请日：2017-06-28

Applicant: LG DISPLAY CO., LTD.

Inventor： Sang-Bin LEE ,  Hye-Min HWANG ,  Hui-Kun YUN ,  Jun-Ho YOUN ,  Jun-Young KIM

IPC: H01L27/32 ,  H01L51/52

CPC classification number: H01L27/3206 ,  G09G3/32 ,  G09G2300/0842 ,  H01L27/3211 ,  H01L27/3246 ,  H01L27/3258 ,  H01L51/0004 ,  H01L51/5012 ,  H01L51/5225 ,  H01L51/5265 ,  H01L2227/323 ,  H01L2251/558

Abstract: An electroluminescent display device includes a substrate on which first and second pixel regions are defined, a passivation layer over the substrate, a first electrode in each of the first and second pixel regions on the passivation layer, a bank layer exposing the first electrode, a light emitting layer on the first electrode exposed by the bank layer, and a second electrode on the light emitting layer, wherein the bank layer includes first and second openings exposing the first electrodes corresponding to the first and second pixel regions, respectively, and a depth of the second opening is larger than a depth of the first opening.

公开(公告)号：US20240237385A1

公开(公告)日：2024-07-11

申请号：US18368304

申请日：2023-09-14

Applicant: LG Display Co., Ltd.

Inventor： Sun-Hee LEE ,  Hui-Kun YUN ,  Woo-Young LEE ,  Sung-Min JO

IPC: H10K50/13 ,  H10K50/81 ,  H10K50/82 ,  H10K85/60

CPC classification number: H10K50/13 ,  H10K50/81 ,  H10K50/82 ,  H10K85/6572

Abstract: An organic light emitting diode (OLED) and an organic light emitting device comprising the OLED (e.g., a display device or a lighting device) are described. An emissive layer disposed between two electrodes includes a blue emitting material layer and a red emitting material layer disposed adjacently to the blue emitting material layer, where a first host in the blue emitting material layer and a second host in the red emitting material layer have controlled energy levels. As red and blue luminous efficiencies are controlled in balance, stable blue luminous efficiency and beneficial red luminous lifespan can be implemented.

公开(公告)号：US20240224570A1

公开(公告)日：2024-07-04

申请号：US18471872

申请日：2023-09-21

Applicant: LG Display Co., Ltd.

Inventor： Woo-Young LEE ,  Hui-Kun YUN ,  Sun-Hee LEE ,  Sung-Min JO

IPC: H10K50/13 ,  H10K85/60

CPC classification number: H10K50/131 ,  H10K85/626 ,  H10K85/654 ,  H10K85/6572

Abstract: An organic light emitting diode (OLED) and an organic light emitting device including the OLED (e.g., a display device or a lighting device) are disclosed herein. An emissive layer disposed between two electrodes includes a charge control layer with controlled hole mobility and/or a HOMO energy level between a red emitting material layer and a blue emitting material layer. The blue luminous efficiency can be improved and exciton recombination zone is formed within an emitting material layer by injecting holes and electrons into the emitting material layer in balance. As the luminous efficiency of red and blue lights is controlled in balance, beneficial blue luminous efficiency and excellent red luminous efficiency can be realized.